Title:
EXHAUST GAS PURIFYING CATALYST
Document Type and Number:
WIPO Patent Application WO/2023/139831
Kind Code:
A1
Abstract:
The present invention provides an exhaust gas purifying catalyst which has high exhaust gas purification performance at a cold start after a hydrothermal durability treatment. An exhaust gas purifying catalyst disclosed herein is provided with a base material and a catalyst layer that is arranged on the base material. The catalyst layer contains a catalyst metal and a hydrocarbon adsorbent. The hydrocarbon adsorbent contains 80% by mass or more of a molecular sieve that does not substantially contain Si.
Inventors:
CHIBA AKIYA (JP)
OGAWA RYOICHI (JP)
KAWAKAMI YUKI (JP)
IMAI HIROTO (JP)
OGAWA RYOICHI (JP)
KAWAKAMI YUKI (JP)
IMAI HIROTO (JP)
Application Number:
PCT/JP2022/032625
Publication Date:
July 27, 2023
Filing Date:
August 30, 2022
Export Citation:
Assignee:
CATALER CORP (JP)
International Classes:
B01D53/94; B01J29/83; B01J29/80; B01J35/04
Foreign References:
| JPH05261289A | 1993-10-12 | |||
| JPH0768178A | 1995-03-14 | |||
| JPH06171915A | 1994-06-21 |
Other References:
CHEN, F. ; DO, M.H. ; ZHENG, W. ; CHENG, D.G. ; ZHAN, X.: "Catalytic reduction of N"2O with CH"4 over FeAlPO-5 catalyst", CATALYSIS COMMUNICATIONS, ELSEVIER, AMSTERDAM, NL, vol. 9, no. 15, 20 September 2008 (2008-09-20), AMSTERDAM, NL , pages 2481 - 2484, XP025348284, ISSN: 1566-7367
KENNETH VILLANI, WALTER VERMANDEL, KOEN SMETS, DUODUO LIANG, GUSTAAF VAN TENDELOO, AND JOHAN A. MARTENS: "Platinum Particle Size and Support Effects in NOx Mediated Carbon Oxidation over Platinum Catalysts", ENVIRONMENTAL SCIENCE & TECHNOLOGY, AMERICAN CHEMICAL SOCIETY, US, vol. 40, no. 8, 15 April 2006 (2006-04-15), US , pages 2727 - 2733, XP002648528, ISSN: 0013-936X, DOI: 10.1021/es051871h
KENNETH VILLANI, WALTER VERMANDEL, KOEN SMETS, DUODUO LIANG, GUSTAAF VAN TENDELOO, AND JOHAN A. MARTENS: "Platinum Particle Size and Support Effects in NOx Mediated Carbon Oxidation over Platinum Catalysts", ENVIRONMENTAL SCIENCE & TECHNOLOGY, AMERICAN CHEMICAL SOCIETY, US, vol. 40, no. 8, 15 April 2006 (2006-04-15), US , pages 2727 - 2733, XP002648528, ISSN: 0013-936X, DOI: 10.1021/es051871h
Attorney, Agent or Firm:
ABE, Makoto (JP)
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